mailerlite.gemspec in mailerlite-1.6.0 vs mailerlite.gemspec in mailerlite-1.6.1

@@ -1,5 +1,7 @@
+# frozen_string_literal: true
+
 lib = File.expand_path('lib', __dir__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require 'mailerlite/version'
 
 Gem::Specification.new do |spec|
@@ -23,10 +25,10 @@
   spec.require_paths = ['lib']
   spec.required_ruby_version = '>= 2.1.0'
 
   spec.add_dependency 'faraday', '~> 0.10'
   spec.add_dependency 'faraday_middleware', '~> 0.10'
-  spec.add_dependency 'hashie', '~> 3.5.5'
+  spec.add_dependency 'hashie', '>= 3.5.5'
 
   spec.add_development_dependency 'bundler', '~> 1.11'
   spec.add_development_dependency 'rake', '~> 10.0'
 end